CN104183126A - Traffic persuasion system based on Zigbee technology - Google Patents
Traffic persuasion system based on Zigbee technology Download PDFInfo
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- CN104183126A CN104183126A CN201410471688.1A CN201410471688A CN104183126A CN 104183126 A CN104183126 A CN 104183126A CN 201410471688 A CN201410471688 A CN 201410471688A CN 104183126 A CN104183126 A CN 104183126A
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Abstract
The invention relates to a traffic persuasion system based on a Zigbee technology, and relates to the field of traffic devices. The traffic persuasion system aims to solve the problems that it is difficult for an existing artificial traffic persuader to work from day to night, and manpower is wasted. The traffic persuasion system based on the Zigbee technology is a real-time snapshot type intelligent traffic persuasion system suitable for being used outside. A modular and split structure layout design is adopted for the whole set of system, and control is conducted through an embedded-type high-speed microprocessor chip; a persuasion machine conducts voice prompt through comprehensive judgment on the crosswalk signals, pedestrians and the movement states of non-motor vehicles to guide and assist the pedestrians in passing through the traffic intersections safely; if the pedestrians or the non-motor vehicles are detected to violate the rule, the corresponding voice alarm is given out, and an image collection module is controlled by the Zigbee wireless network to conduct real-time snapshot, and the rule violation evidence is stored in the mode of pictures. The traffic persuasion system based on the Zigbee technology is suitable for being installed at street intersections of daily life of people.
Description
Technical field
The invention belongs to transit equipment field, relate in particular to a kind of traffic advice system.
Background technology
The illegal phenomenon of motor vehicle violation has effectively been controlled in the appearance of electronic police, but on walkway, the violation problem of pedestrian and non power driven vehicle is not effectively solved, pedestrian's phenomenon of making a dash across the red light that violates the traffic regulations is not effectively solved, particularly, in the bustling section of business, very easily cause the generation of traffic hazard.In order to reduce the appearance of a pedestrian and non motorized vehicle unlawful practice, China has started the behavior of this " Chinese style is gone across the road " to investigate and prosecute at present.The on-the-spot supervision commander of most city transportation arrangements advice persons, but transportation arrangements advice person's method can increase urban traffic control expense on the one hand, on the other hand, is subject to time and weather influence, and traffic advice person is difficult to accomplish all weather operations.
Summary of the invention
The present invention is difficult to accomplish all weather operations in order to solve existing artificial traffic advice person, and the problem of waste of manpower, and the system of the traffic advice based on ZigBee technology is now provided.
Traffic advice system based on ZigBee technology, it comprises: signal lamp state detection module, pedestrian's state detection module, CPU, RTC module, voice module, Zigbee communication module, volume output module, No. two Zigbee communication modules and image processing equipment;
The signal output part of signal lamp state detection module connects a signal input part of CPU, the signal output part of pedestrian's state detection module connects another signal input part of CPU, the signal input output end of RTC module connects a signal input output end of CPU, the signal input output end of voice module connects a signal input part of the signal output part connection volume output module of No. two signal input output end RTC modules of CPU, and the signal output part of voice module connects another signal input part of volume output module;
Between a Zigbee communication module and No. two Zigbee communication modules, realize the mutual of wireless signal;
The signal input output end of a Zigbee communication module connects No. three signal input output ends of CPU;
The signal input output end of No. two Zigbee communication modules connects the signal input output end of image processing equipment;
Described pedestrian's state detection module comprises: infrared emitting end and infrared receiver end,
Infrared emitting end is launched dispersion shape infrared light beam, and infrared receiver end is for gathering whole infrared light beams that infrared emitting end is launched; The signal output part of infrared receiver end is as the signal output part of pedestrian's state detection module;
In voice module, embed and have the voice messaging that needs broadcasting;
In described CPU, embed the unit that has software to realize, described unit comprises:
House dog timing unit;
Judge the unit whether house dog clock overflows;
The unit of the signal that collection pedestrian state detection module sends;
Judge the unit of the signal that pedestrian's state detection module sends;
The unit of the signal that collection signal lamp state detection module sends;
Judge the unit of the signal that signal lamp state detection module sends;
Read the unit of the data of storing in voice module;
Control voice module and play the unit of voice;
The unit of scanning RTC module;
The unit of opening or disconnecting according to the timing signal control volume output module of RTC module;
Send the unit of image pick-up signal to Zigbee communication module;
Control the unit of a Zigbee communication module transmission wireless signal;
Gather the unit of the signal that Zigbee communication module receives;
Store the unit of the signal of a Zigbee communication module transmission;
The unit of opening or disconnecting according to Zigbee communication module of timing signal control of RTC module.
Traffic based on ZigBee technology advice system of the present invention is the real-time grasp shoot formula intelligent transportation advice system that is applicable to outdoor use.Whole system adopts modularization, Split type structure topological design, control by embedded high-speed micro-chip processor, when advice machine is by the comprehensive judgement to pedestrian crosswalk signal lamp and pedestrian and bicycle motion state, carry out voice message, guiding and auxiliary pedestrian's safety traffic intersection, if while having detected that pedestrian and bicycle are in violation of rules and regulations, carry out corresponding phonetic warning, and carry out real-time grasp shoot by Zigbee wireless network control image capture module, evidence violating the regulations is stored with the form of photo.The present invention is applicable to be arranged on the crossing, street of people's daily life, can accomplish round-the-clock unmanned, assists or replace traffic advice person's work, can reduce urban traffic control expense, improves the trip of pedestrian's civilization and realizes.
Brief description of the drawings
Fig. 1 is the structural representation of the advice of the traffic based on ZigBee technology system of the present invention;
Fig. 2 is the structural representation of infrared facility while being arranged on roadside;
Fig. 3 is the process flow diagram of the traffic advice system based on ZigBee technology;
Fig. 4 is the structural representation of wireless device while being arranged on roadside.
Embodiment
Embodiment one: illustrate present embodiment with reference to Fig. 1, the advice of the traffic based on ZigBee technology system described in present embodiment, it comprises: signal lamp state detection module 1, pedestrian's state detection module 2, CPU3, RTC module 4, voice module 5 and volume output module 7;
The signal output part of signal lamp state detection module 1 connects a signal input part of CPU3, the signal output part of pedestrian's state detection module 2 connects another signal input part of CPU3, the signal input output end of RTC module 4 connects a signal input output end of CPU3, the signal input output end of voice module 5 connects a signal input part of the signal output part connection volume output module 7 of No. two signal input output end RTC modules 4 of CPU3, and the signal output part of voice module 5 connects another signal input part of volume output module 7;
Described pedestrian's state detection module 2 comprises: infrared emitting end and infrared receiver end,
Infrared emitting end is launched dispersion shape infrared light beam, and infrared receiver end is for gathering the infrared light beam that infrared emitting end is launched; The signal output part of infrared receiver end is as the signal output part of pedestrian's state detection module 2;
In voice module 5, embed and have the voice messaging that needs broadcasting;
In described CPU3, embed the unit that has software to realize, described unit comprises:
House dog timing unit;
Judge the unit whether house dog clock overflows;
The unit of the signal that collection pedestrian state detection module 2 sends;
Judge the unit of the signal that pedestrian's state detection module 2 sends;
The unit of the signal that collection signal lamp state detection module 1 sends;
Judge the unit of the signal that signal lamp state detection module 1 sends;
Read the unit of the data of storage in voice module 5;
Control voice module 5 and play the unit of voice;
The unit of scanning RTC module 4;
According to the timing signal control volume output module 7 of RTC module 4 open, the unit of disconnection or volume increase and decrease.
The traffic based on ZigBee technology described in present embodiment advice system is arranged on the go across the road signal lamp position at place of pedestrian in the time of practical application, and the infrared light beam that infrared emitting end sends is parallel with zebra stripes, and is positioned at road limit, as shown in Figure 2.Infrared receiver end is for gathering the infrared light beam that infrared emitting end is launched, CPU3 gathers the state of pedestrian's state detection module 2 simultaneously, in the time that infrared ray receiving end can receive whole infrared light beam that infrared emitting end launches, the action that represents do not have pedestrian to have and go across the road; In the time that infrared ray receiving end can not receive whole infrared light beam that infrared emitting end launches, illustrate that pedestrian is positioned at or passes through the coverage of infrared light beam, there is the behavior of going across the road, the state of CPU3 collection signal lamp state detection module 1 simultaneously, if detect, the state of signal lamp is green light, represents safety; If detect, the state of signal lamp is red light, CPU3 gathers and selects the phonetic order in voice module 5, and the result of selection is sent in voice module 5, this voice module 5 is sent to volume output module 7 according to the selection result receiving by phonetic order, this volume output module 7 is play phonetic order, for pointing out advice pedestrian to forbid jaywalking.Wherein the control flow of the advice of the traffic based on ZigBee technology system as shown in Figure 3.
Between RTC module 4 (Real-Time Clock, real-time clock) and CPU3, communicate by letter with I2C serial mode, so that CPU3 reads current time at any time.RTC module 4 clocks need to set in advance, and in the traffic advice system based on ZigBee technology, increase keyboard, input by keyboard, and CPU3 will be converted to machine code the time and send to RTC module 4, when RTC module 4 is carried out to school; Whether CPU3 need to judge whether to need switching on and shutting down according to the time, and need to carry out speech volume size conversion according to the time of user's request, prevents that time-division at night native system from bothering around life the saving resource of resident family.
Between voice module 5 and CPU3, with the communication of SPI serial mode, recorded and need the voice messaging play in voice module, which section voice CPU3 currently should play by signal lamp state and pedestrian's state are comprehensively judged; Voice module 5 records voice segments, to can read at any time in the time that CPU3 needs.
House dog timing unit is that CPU is embedded, when CPU starts watchdog function, be equivalent to open a counter, counter is not subject to CPU programmed control, the clock of counter comes from the beat clock of CPU core, and CPU can, in rolling counters forward to before pre-set threshold value, carry out software reset's operation to counter, when rolling counters forward exceedes pre-set threshold value---be that house dog is overflowed, CPU will be by house dog counter forced resetting.
Embodiment two: illustrate present embodiment with reference to Fig. 1, present embodiment is that the traffic advice system based on ZigBee technology described in embodiment one is described further, in present embodiment, it also comprises: Zigbee communication module 6, No. two Zigbee communication modules 8 and image capture modules 9;
Between a Zigbee communication module 6 and No. two Zigbee communication modules 8, realize the mutual of wireless signal;
The signal input output end of a Zigbee communication module 6 connects No. three signal input output ends of CPU3;
The signal input output end of No. two Zigbee communication modules 8 connects the signal input output end of image capture module 9;
In described CPU3, also comprise the unit that following software is realized:
Send the unit of image pick-up signal to Zigbee communication module 6;
Control the unit that Zigbee communication module 6 sends wireless signal;
Gather the unit of the signal that Zigbee communication module 6 receives;
Store the unit of the signal that Zigbee communication module 6 sends;
The unit of opening or disconnecting according to Zigbee communication module 6 of timing signal control of RTC module 4.
In present embodiment, the described traffic based on ZigBee technology advice system, in the time of practical application, No. two Zigbee communication modules 8 and image capture module 9 are arranged on road opposite, as shown in Figure 4.In the time finding that there is pedestrian and go across the road by force, image pick-up signal is sent a signal to Zigbee communication module 6 No. one by CPU3, a Zigbee communication module 6 is sent to this signal No. two Zigbee communication modules 8 on road opposite in the mode of wireless signal, No. two signal is sent to image capture module 9 by Zigbee communication module 8, image capture module 9 is taken current road conditions image, and stores this image information.Communication between Zigbee module, the data of transmission are not simple unidirectional transmission or unidirectional reception, with data redundancy verification, when communication, two modules all can have data transmit-receive, just can complete the transmission of whole data.The data communication of No. two Zigbee modules and figure acquisition module equally also has data interaction, in the time that No. two Zigbee modules receive data, sends data to image capture module; In the time that whole system is used for the first time, need to communicate to No. two Zigbee modules the setting of the information such as channel, physical address, data message is write Zigbee module No. two by image processing module.
Between Zigbee communication module 6 and CPU3 by USART serial data communication, in the time that CPU3 detects that keyboard input arranges the relevant information of two Zigbee communication modules, the information recording of keyboard input can be got off, carry out data interaction by USART serial communication in Zigbee module simultaneously.Zigbee communication module relevant information comprises frequency, channel, module self address, node address, transmission mode, through-put power of radio communication etc.
Embodiment three: present embodiment is that the traffic advice system based on ZigBee technology described in embodiment one is described further, and in present embodiment, volume output module 7 comprises: power amplifier and loudspeaker;
The signal output part of power amplifier connects the signal input part of loudspeaker;
The signal input part of power amplifier is as another signal input part of volume output module 7.
Power amplifier is that the voice signal being stored in voice module 5 is amplified; By loudspeaker, the voice messaging of amplifying power is played back.
Embodiment four: present embodiment is that the traffic advice system based on ZigBee technology described in embodiment one is described further, and in present embodiment, it also comprises: shell; Described signal lamp state detection module 1, pedestrian's state detection module 2, CPU3, RTC module 4, voice module 5 and volume output module 7 are all positioned at enclosure.
Embodiment five: present embodiment is that the traffic advice system based on ZigBee technology described in embodiment four is described further, and in present embodiment, the material of described shell is metal.
Because system of the present invention need to be operated under outdoor state, for preventing to native system fuselage, becoming damage, adopting metal shell, the corrosion resistance of metal is strong, leakproofness is good, can extend the serviceable life of native system.
Embodiment six: present embodiment is that the traffic advice system based on ZigBee technology described in embodiment one is described further, and in present embodiment, the infrared light beam scattering diameter that described infrared emitting end sends is 0.6m.
Embodiment seven: present embodiment is that the traffic advice system based on ZigBee technology described in embodiment two is described further, in present embodiment, Zigbee communication module 6 and No. two Zigbee communication modules 8 low-power consumption LAN protocol based on IEEE802.15.4 standard communicates.
Zigbee is the low-power consumption LAN protocol based on IEEE802.15.4 standard, and cost is low, and can support great deal of nodes, for this environment of outdoor traffic intersection, little, safe, reliable, environmentally friendly on other civilian wireless network impacts.
Embodiment eight: present embodiment is that the traffic advice system based on ZigBee technology described in embodiment two is described further, and in present embodiment, image capture module 9 is video camera, and the pixel of this video camera is 5,000,000.
In present embodiment, described camera pixel, up to 5,000,000, can be taken and get high definition photo, and violation pedestrian and bicycle can clearly be identified.
Embodiment nine: present embodiment is that the traffic advice system based on ZigBee technology described in embodiment one is described further, in present embodiment, between described voice module 5 and CPU3 with the communication of SPI serial mode.
Embodiment ten: present embodiment is that the traffic advice system based on ZigBee technology described in embodiment two is described further, in present embodiment, between Zigbee communication module 6 and CPU3 by USART serial data communication.
The partial parameters of the advice of the traffic based on ZigBee technology system of the present invention is as follows:
Operating voltage: 220VAC ± 20%50Hz ± 2; Working temperature :-40 DEG C～80 DEG C; Working relative humidity: 10%～90%RH; Command range :≤8m (passive type); ≤ 13m (active); Control angle: 45 ° (passive type); 20 ° (active); RTC error: ± 0.5 second/day.
Signal lamp state detection module 1 principle: red light Power supply, red light is lighted; When green light Power supply, green light is lighted, signal lamp state detection module 1 is connected with red, green signal light power supply respectively, process by voltage that the alternating current 220V power supply of signal lamp is converted to can be for the direct supply of system operation, and red, green signal light power supply are converted to relatively weak signal simultaneously and directly flow to CPU3.
Pedestrian's state detection module 2 principles: adopt infrared emission principle, by two infrared probes, respectively as infrared emitting end and infrared receiver end.Infrared emitting end and infrared receiver end are placed on respectively to the roadside of the corresponding crossing of the same side crossing zebra stripes.When infrared emitting is rectified normal work, can send infrared beam, infrared receiver end receives infrared beam in real time.Detection distance between infrared emitting end and infrared receiver end can reach 20m, infrared beam scattering diameter 0.6m.So infrared emitting end and infrared receiver end be formed together with invisible warning line, in the time that pedestrian or bicycle touch this warning line, can stop even all light beams of part infrared beam, when infrared receiver end detects that normally receiving infrared-ray transmitting terminal is sent whole infrared beam, will produce alerting signal, send CPU3 to.
Claims (9)
1. the advice of the traffic based on ZigBee technology system, it is characterized in that, it comprises: signal lamp state detection module (1), pedestrian's state detection module (2), CPU (3), RTC module (4), voice module (5), a Zigbee communication module (6), volume output module (7), No. two Zigbee communication modules (8) and image processing equipment (9);
The signal output part of signal lamp state detection module (1) connects a signal input part of CPU (3), the signal output part of pedestrian's state detection module (2) connects another signal input part of CPU (3), the signal input output end of RTC module (4) connects a signal input output end of CPU (3), the signal input output end of voice module (5) connects a signal input part of the signal output part connection volume output module (7) of No. two signal input output end RTC modules (4) of CPU (3), the signal output part of voice module (5) connects another signal input part of volume output module (7),
Between a Zigbee communication module (6) and No. two Zigbee communication modules (8), realize the mutual of wireless signal;
The signal input output end of a Zigbee communication module (6) connects No. three signal input output ends of CPU (3);
The signal input output end of No. two Zigbee communication modules (8) connects the signal input output end of image processing equipment (9);
Described pedestrian's state detection module (2) comprising: infrared emitting end and infrared receiver end,
Infrared emitting end is launched dispersion shape infrared light beam, and infrared receiver end is for gathering whole infrared light beams that infrared emitting end is launched; The signal output part of infrared receiver end is as the signal output part of pedestrian's state detection module (2);
In voice module (5), embed and have the voice messaging that needs broadcasting;
In described CPU (3), embed the unit that has software to realize, described unit comprises:
House dog timing unit;
Judge the unit whether house dog clock overflows;
The unit of the signal that collection pedestrian's state detection module (2) sends;
Judge the unit of the signal that pedestrian's state detection module (2) sends;
The unit of the signal that collection signal lamp state detection module (1) sends;
Judge the unit of the signal that signal lamp state detection module (1) sends;
Read the unit of the data of storage in voice module (5);
Control voice module (5) and play the unit of voice;
The unit of scanning RTC module (4);
The unit of opening or disconnecting according to the timing signal control volume output module (7) of RTC module (4);
Send the unit of image pick-up signal to Zigbee communication module (6);
Control the unit that a Zigbee communication module (6) sends wireless signal;
Gather the unit of the signal that a Zigbee communication module (6) receives;
Store the unit of the signal of a Zigbee communication module (6) transmission;
The unit of opening or disconnecting according to a Zigbee communication module of timing signal control (6) of RTC module (4).
2. the advice of the traffic based on ZigBee technology system according to claim 1, is characterized in that, volume output module (7) comprising: power amplifier and loudspeaker;
The signal output part of power amplifier connects the signal input part of loudspeaker;
The signal input part of power amplifier is as another signal input part of volume output module (7).
3. the advice of the traffic based on ZigBee technology system according to claim 1, is characterized in that, it also comprises: shell; Described signal lamp state detection module (1), pedestrian's state detection module (2), CPU (3), RTC module (4), voice module (5) and volume output module (7) are all positioned at enclosure.
4. the advice of the traffic based on ZigBee technology system according to claim 3, is characterized in that, the material of described shell is metal.
5. the advice of the traffic based on ZigBee technology system according to claim 1, is characterized in that, the infrared light beam scattering diameter that described infrared emitting end sends is 0.6m.
6. the advice of the traffic based on ZigBee technology system according to claim 1, it is characterized in that, a Zigbee communication module (6) and the low-power consumption LAN protocol of No. two Zigbee communication modules (8) based on IEEE802.15.4 standard communicate.
7. the advice of the traffic based on ZigBee technology system according to claim 1, is characterized in that, image capture module (9) is video camera, and the pixel of this video camera is 5,000,000.
8. the traffic based on ZigBee technology according to claim 1 advice system, is characterized in that, between described voice module (5) and CPU (3) with the communication of SPI serial mode.
9. the advice of the traffic based on ZigBee technology system according to claim 1, is characterized in that, passes through USART serial data communication between a Zigbee communication module (6) and CPU (3).
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| CN105046994A (en) * | 2015-07-10 | 2015-11-11 | 深圳市恩琪交通科技有限公司 | One-piece intelligent zebra crossing pedestrian signal lamp |
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